docstr: Checks if resources allow for another client.
  Returns a boolean indicating if initialization was successful.
docstr_tok: ["Checks","if","resources","allow","for","another","client",".","Returns","a","boolean","indicating","if","initialization","was","successful","."]
code: def _init(self, client_id: str, context: Any, start_time: float):
      """
      Checks if resources allow for another client.
      Returns a boolean indicating if initialization was successful.
      """
      with self.clients_lock:
          reconnecting = _get_reconnecting_from_context(context)
          threshold = int(CLIENT_SERVER_MAX_THREADS / 2)
          if self.num_clients >= threshold:
              logger.warning(
                  f"[Data Servicer]: Num clients {self.num_clients} "
                  f"has reached the threshold {threshold}. "
                  f"Rejecting client: {client_id}. "
              )
              if log_once("client_threshold"):
                  logger.warning(
                      "You can configure the client connection "
                      "threshold by setting the "
                      "RAY_CLIENT_SERVER_MAX_THREADS env var "
                      f"(currently set to {CLIENT_SERVER_MAX_THREADS})."
                  )
              context.set_code(grpc.StatusCode.RESOURCE_EXHAUSTED)
              return False
          if reconnecting and client_id not in self.client_last_seen:
              # Client took too long to reconnect, session has been
              # cleaned up.
              context.set_code(grpc.StatusCode.NOT_FOUND)
              context.set_details(
                  "Attempted to reconnect to a session that has already "
                  "been cleaned up."
              )
              return False
          if client_id in self.client_last_seen:
              logger.debug(f"Client {client_id} has reconnected.")
          else:
              self.num_clients += 1
              logger.debug(
                  f"Accepted data connection from {client_id}. "
                  f"Total clients: {self.num_clients}"
              )
          self.client_last_seen[client_id] = start_time
          return True
  
imports: from collections import defaultdict
  from ray.util.client.server.server_pickler import loads_from_client
  import ray
  import logging
  import grpc
  from queue import Queue
  import sys
  from typing import Any, Dict, Iterator, TYPE_CHECKING, Union
  from threading import Event, Lock, Thread
  import time
  import ray.core.generated.ray_client_pb2
  import ray.core.generated.ray_client_pb2_grpc
  from ray.util.client.common import CLIENT_SERVER_MAX_THREADS, _propagate_error_in_context, OrderedResponseCache
  from ray.util.client import CURRENT_PROTOCOL_VERSION
  from ray.util.debug import log_once
  from ray._private.client_mode_hook import disable_client_hook
label_desc: Use image node_id 3 for calling the DataServicer obj's underlying member method code with example usage: obj._init(client_id, context, start_time) and returns: True, False, False